Finding the Fourth Proportional to 315,446.36, 473,098.79 and 90,756.68
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Solution
The fourth proportional to 315,446.36, 473,098.79 and 90,756.68 is: 136,114.66
Step by Step Solution
- Step 1: Write the proportion equation
315,446.36 : 473,098.79 = 90,756.68 : x - Step 2: Convert to fraction form
315,446.36/473,098.79 = 90,756.68/x - Step 3: Cross multiply
315,446.36x = 473,098.79 × 90,756.68 - Step 4: Simplify right side
315,446.36x = 42,936,873,353.81 - Step 5: Solve for x
x = 42,936,873,353.81/315,446.36 - Step 6: Final answer
x = 136,114.66
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.